rm /{PATH_WORK_SPACE}/.metadata/.plugins/org.eclipse.dltk.core.index.sql.h2/*
Riavvia eclipse e assicurati che il progetto abbiamo come include library Zend
Quit Eclipse
Go to workspace/.metadata/.plugins/org.eclipse.jdt.core
Remove *.index and savedIndexNames.txt
Restart Eclipse and search Ctrl+T for the offending type. The indexes will be rebuilt.
Le jeux sont fait!